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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제20권 제1호
- 발행연도
- 2019.1
- 수록면
- 90 - 94 (5page)
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ZrC (shell) and ZrO2 (core) (ZrC@ZrO2) core-shell nanopowders were in-situ synthesized by precipitating method usingzirconium dioxide (ZrO2) and sucrose (C12H22O11). C12H22O11 was selected since it can be completely decomposed to carbon. Thus, carbon might be accounted precisely for the carbothermal reduction reaction. The ZrC@ZrO2 core-shell nanopowderswere obtained with a molar ratio of C / Zr = 2 for the starting materials at 1500 oC for 2 hrs. The SEM photomicrographreveals that ZrC@ZrO2 core-shell particles had an equiaxed morphology with a high surface rough. Furthermore, the sizedistribution of the particles was around 100 nm in diameter. Additionally, in the case of either C / Zr (mol.) > 1 or pyrolyzingtemperature above 1400 oC, the thickness of ZrC shell could be increased. Moreover, the HR-TEM showed that thenanopowders possessed core-shell structure with ZrO2 core and ZrC shell, and the thickness of ZrC was about 10 nmcarbothermally reduced at 1500 oC for 2 hrs with a molar ratio of C / Zr = 2
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참고문헌 (22)
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